<template>
  <el-row class="login-container">
    <el-col :lg="16" :md="12" class="left">
      <div>
        <div class="font-bold text-5xl text-light-50 mb-4">欢迎来到我们的系统</div>
      </div>
    </el-col>
    <el-col :lg="8" :md="12" class="right">
      <h2>欢迎回来</h2>
      <div class="flex items-center justify-center my-5 text-gray-300 space-x-2">
        <span class="line"></span>
        <span>账号密码登陆</span>
        <span class="line"></span>
      </div>
      <el-form ref="formRef" :rules="rules" :model="form" class="w-[250px]">
        <el-form-item prop="username">
          <el-input v-model="form.username" placeholder="请输入用户名">
            <template #prefix>
              <el-icon class="el-input__icon">
                <user/>
              </el-icon>
            </template>
          </el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input v-model="form.password" placeholder="请输入密码" show-password>
            <template #prefix>
              <el-icon class="el-input__icon">
                <lock/>
              </el-icon>
            </template>
          </el-input>
        </el-form-item>
        <el-form-item>
          <el-button round color="#626aef" class="w-[250px]" type="primary" @click="onSubmit">登 陆</el-button>
        </el-form-item>
      </el-form>
    </el-col>
  </el-row>
</template>

<script setup>
import {ref, reactive, onMounted, onBeforeUnmount} from 'vue'
import {toast} from '@/utils/util'
import {useRouter} from 'vue-router'
import {useStore} from 'vuex'

const store = useStore()
const router = useRouter()

const form = reactive({
  username: "",
  password: ""
})

const rules = {
  username: [
    {
      required: true,
      message: '用户名不能为空',
      trigger: 'blur'
    },
  ],
  password: [
    {
      required: true,
      message: '用户名不能为空',
      trigger: 'blur'
    },
  ]
}

const formRef = ref(null)
const loading = ref(false)
const onSubmit = () => {
  formRef.value.validate((valid) => {
    if (!valid) {
      return false
    }
    loading.value = true

    store.dispatch("login", form).then(res => {
      toast("登录成功")
      router.push("/")
    }).finally(() => {
      loading.value = false
    })
  })
}

// 监听回车事件
function onKeyUp(e) {
  if (e.key === "Enter") onSubmit()
}

// 添加键盘监听
onMounted(() => {
  document.addEventListener("keyup", onKeyUp)
})
// 移除键盘监听
onBeforeUnmount(() => {
  document.removeEventListener("keyup", onKeyUp)
})
</script>

<style scoped lang="scss">
.login-container {
  @apply min-h-screen bg-indigo-500;
  .left {
    @apply flex items-center justify-center flex-col;
  }

  .right {
    @apply flex items-center justify-center flex-col bg-light-50;
    h2 {
      @apply font-bold text-3xl text-gray-800;
    }

    .line {
      @apply h-[1px] w-16 bg-gray-200;
    }
  }
}
</style>
